Octave Specialty Group, Inc. OSG

Octave Specialty Group, Inc. functions as a financial services holding company, organizing its operations into two distinct divisions. Its Specialty Property and Casualty Insurance segment delivers specialized program insurance, primarily focusing on coverage for commercial and personal liability exposures. The second division, Insurance Distribution, offers a broad spectrum of services for distributing specialty property and casualty insurance, which includes roles such as managing general agents, underwriters, and insurance brokers, alongside other related distribution and underwriting ventures. Established in 1971, the company, with its corporate headquarters located in New York, New York, rebranded from its former name, Ambac Financial Group, Inc., to Octave Specialty Group, Inc. in November 2025.